Ash sifter



2 Sheets-Sheet l WML/AM f. ALT/Ma MSSQL 6, `S14/AAW July 17, '1934.

ASH SIFTER Filed March 18. 1932 E l 1MM@ Q SWX., C NN f x y w mm X X-Xhm X X X X X X X `X July 17, 1934. w. E. ALTHAUS ET AL ASH SIFTERFiled March 18, 1932 2 Sheets-Sheet 2 Patented July 17, 1934 f sfrApplication',` MarchV 18;' Serial.

A inventionrelats'- to asn Sifterslffoif furra'ces *and* one-` object ofthe'l "invention is to 'pr l" vide 'means whereby ashes*rnalfyijlb''eY'Asifted the 1 sashhpitof the furnace; thereby' confining' themutisme-fthe aan pitand avoiding* unnecessary# h'anding of the'ashes.'Vy

A further object of the inventiir te provide* an' ash sift'er'constructed separately from the fur'- spiriti-oftheinvention?- InIcarrying outf'our ini/entimw'fmont af siiitl-` L 4G abl'e screen withinVthef'ash-pitfof-the -"fr "ace',-' inf apositin" to re'cei've'the ashes"vv1'ich-* dpfrom* th" grate', f' andsupportf thiE Sren" in chga neifthtfit-'hia-f be vihrated-tos'epart the ashes" from the partiallyburnedclandrnyfbe" rel" Lmoved fromd the vash pit for the purpose ofdischangii'g-therefrom41` he "partia,11y burned coal Whichhas-aecurni1latherein. The screen may be mounted in various ways but when the ash pitof the furnace is not so constructed as to provide 50"4`a support forthe screen it is necessary to provide a. supporting structure which maybe inserted in the ash pit and on which the screen may be movablysupported.

In Figs. 1, 2 and 3 we have shown an ash sifter 55%?constructed as acomplete unit separate from the sometimes be of greater Width than thedoor. To enable the frame to be inserted through such a narrow doorwayWe have made the same collapsible so that the two side members can bemoved one toward the other to permit the frame to be inserted in the ashpit and then extended to 1 their normal positions. As here shown, thelower portions of the side members are connected i rdf Aguide plate orchute.

one to the other by cross bars 23 and the upper portions of the sidemembers are connected by cross bars 24, the several cross bars beingpivotally connected with the respective side members so that the sidemembers may be moved one toward the other, as shown in Fig. 3.

The walls of an ash pit are usually curved so that it is not practicableto make the supporting structure of a width equal to the greatest widthof the ash pit and in order that all the ashes dropping from the gratemay be directed onto the screen we have provided guide plates or chuteswhich extend laterally from the respective sides of the screen and whichare adapted to receive ashes and guide the same onto the screen. Theseguide plates may be of any suitable character and may be supported inany desired manner. As here shown, each side plate comprises two iins,25 and 26, extending lengthwise of the frame.

'of the iins are curved and the slots are inclined so that the fins willbe moved into engagement with the wall, after which they are secured inposition by tightening down the bolts. Where the walls of the ash pitare of different shape the ns may be given a diierent shape or extensionplates may be provided for attachment tothe ns, as shown at 31, in Fig.6, to adapt them to the contour of the ash pit wall. We have also shownthe screen as provided at its rear end with a guide plate or chute 32which abuts against the curved rear wall of the ash pit. In order tohold the frame members against relative movement after they have beenextended within the ash pit we have provided locking members adapted tobe moved into engagement with an adjacent portion of the ash pit walland secured in engagement therewith. In the present construction theselocking members are in the `form of slotted bars 33 which are adjustablymounted on the slide plates and adapted to be moved into engagement withthe front wall of the ash pit and held in that position by bolts 34,thus holding the ns in engagement with the walls and holding the framemembers to which the yiins are secured against movement.

to the other by a longitudinal plate 36 which is rigidly secured theretoand which has its upper and lower edges bent inwardly, as shown at 37and 33, to provide the guides for the screen and theiash pan. A separateplate 39 may be secured to the uprights and have its upper edge bentoutwardly, as shown at 40, to support the The upper and lower portionsof the uprights 35 are bent inwardly, as shown at 41 and 42, andpivotally connected with the cross bars 43 and 44.

While we have shown and described one embodiment of our invention, withcertain modifications thereof, we do not desire to be limited to thedetails thereof as various modifications may occur to a person skilledin the art.

Having now fully described our invention what we claim as new and desireto secure by Letters Patent, is:

1. In an ash sifter for a furnace, a frame adapted to be inserted in theash pit of the furnace and comprising side members having guidesextending lengthwise thereof, cross members pivotally attached to therespective side members to collapsibly connect the same, and a screenarranged between said side members and having parts engaging said guidesto slidably and removably support said screen thereon.

2. In an ash sitter for a furnace, a frame adapted to be inserted in theash pit of the furnace and comprising side members having guidesextending lengthwise thereof, cross members pivotally attached to therespective side members to collapsibly 'connect the same, a screenarranged between said side members and having parts engaging said guidesto slidably and removably support said screen thereon, and laterallyextending guide plates carried by the respective side members andadjustable with relation thereto to position the outer edges of saidguide plates close to the walls of said ash pit when said frame is inits extended position.

. 3. In an ash sifter for a furnace, a frame adapted to be inserted inthe ash pit of the furnace and comprising side members connected one tothe other in spaced relation, each side member comprising a plate ofsheet metal having portions bent laterally to form upper and lowerlongitudinal guides, a screen arranged between said side members andslidably and removably supported on said upper guides,r an ash panremovably supported on said lower guides, and guide plates mounted onthe upper portions of the respective side members for longitudinal andlateral adjustment with relation thereto.

4. In an ash sifter for a furnace, a frame adapted to be inserted in theash pit of a fur-'- nace and comprising side members each formed from aplate of sheet metal having intermediate portions bent outwardly to forma longitudinal channel and having its upper portion bent outwardly andthen upwardly to forni a shoulder, and laterally extending guide platessecured Vto the upper portion of each side plate, means for connectingsaid side members for movement one toward the other, whereby said framemay beV having iianges slidably supported in the chan-v nels of saidside members.

